Driven by a desire to experience the full hardware development lifecycle, I deliberately transitioned from a multi-board prototyping plan to engineer a unified single-board PCB. This project ...

All by itself, a calculator based on an Arduino isn’t necessarily very novel. However, [Danko Bertović] of Volos Projects has a nice board that, of course, looks like a calculator. There are 16 keys ...

Elektor has introduced the Elektor MultiCalculator Kit. This Arduino calculator goes beyond basic calculations, offering 22 modes of operation including light and temperature measurement, differential ...

If you are interested in building your very own RPN calculator you might be interested in a new project published to the Instructables website this week by member Shiura. Using a CNC machine, the ...

One of [Kale_3D]’s teachers had made an Arduino-powered calculator. It wasn’t robust and didn’t last too long in the classroom environment. After the non-functional calculator sat around the class for ...

What do you do when your trusty, 45 year old calculator finally needs to be retired? If you’re a programmer with a knack for making things — like Simon Boak — you custom build a replacement. This is ...

In the keypad, there are 8 pins in total out of which 4 pins correspond to the Rows (viz., R1, R2, R3, R4) and the other four correspond to the Columns (viz., C1, C2, C3, C4). These 8 row and column ...